Printing-drum.



PATENTED NOV. l2, 1907.

P. A. WHITMORB.

PRINTING DRUM.

APPLIOATION FILED MAY 11. 1908.

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PATENTED NOV. 12. 1907.

P. A. WHITMORE.

PRINTING DRUM. A

APPLIoA'rIoN FILED HAY 11. 190e.

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PATENTED NOV. l2, 1907.

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APPLICATION FILED MAY 11. 1906.

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APPLIOATION FILED MAY 11. 1906,

PATENTED NOV. l2, 1907.

P. A. WHITMORE.

PRINTING DRUM.

APPLIoATIoN FILED 11u11. 190e.

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F. A. WHITMORLL APRINTING DRUM. APPLICATION FILED. H AY 11, 1906.

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No. 870,918. PATENTED NOV. 12, 1907. P. A. WHITMORE.

PRINTING DRUM.

APrLmATIoN FILED MAY 11. 190e.

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PATENTED NOV. 1'2, 1907.

P. A. WHITMORE. PRINTING DRUM.

APPLIoA'rIoN FILED un 11. 190e.

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UNITED STATES PATENT oEEIoE.

FRED A. WHITMORE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO CROMITON & KNOWLES LOOM WORKS, A CORPORATION OF MASSACHUSETTS.

PRINTING-DRUM.

Specification of Letters Patent.

Patented Nov. 12, 1907.

Application filed May ll. 1906. Serial No. 316.285.

`invented certain new and useful Improvements in Printing-Drums, oi which the following is a specification.

My invention relates to improvements in printing drums used in the manufacture of tapestry carpets, to printupon the waips the different colors, according to the design desired for the carpet.

The object of my invention is to improve upon the construction of printing drums as now ordinarily made. In my improvements I provide a printing drum which is mounted upon and rotates on a stationary shaft, and does not require any outside support. -The periphery of the drum is connected with the hub portion by rods forming spokes, similar to a bicycle wheel, and the length 'of the rods may be adjusted as desired. I also provide a printing drum which has a rim drive, through teeth or a rack on the inner side of the periphery of the drum preferably near one edge thereof, meshing with and driven by a pinion, preferably clutched on a driven shaft. I also provide an improved color carriage brake mechanism, and other improvements connected with other parts of the printing drum mechanism, which will be hereinafter fully described. l have only shown in the drawings a detached portion of a printing drum, with my improvements combined therewith, suicient to enable those skilled in the art to understand the construction and operation thereof.

Referring to the drawings-Figure l is an end view of the printing drum frame, and of the printing drum embodying my improvements; some of the parts at the left of said figure are left off, and the two shafts are shown in section. Fig. 2 is a view of the opposite end of the frame and drum shown in Fig. l, and shows the movable support for the drum shaft. Fig. 3 is, on an enlarged scale, a iront view of the driving mechanism of the drum, embodying my improvements, and shows a portion of the drum. Fig. 4 is, on an enlarged scale, a cross section on line 4, 4, Fig. 3, looking in the direction of arrow a, same figure. Fig. 5 is a section, on line 5, 5, Fig. 4, looking in the direction of arrow b, same figure. Fig. 6 shows, on an enlarged scale, the brake wheel and brake mechanism, shown in Fig. 3, detached. Fig. 7 is a section, on line 7, 7, Fig. 6, looking in the direction of arrow c, same figure. Fig. 8 shows, on an enlarged scale, the color carriage drive mechanism, and its brake mechanism, detached. Fig. 9 shows a portion of the brake mechanism shown in Fig. 8, detached and in an opposite position. Fig. l0 is an edge view, and partial section of the parts shown in Fig. 9, looking in the direction of arrow d, same figure. Fig. ll shows, on an enlarged scale, the driving mechanism of the color carriage,l and its stopping mechanism, and some parts of the usual index mechanism. Fig. l2 is a section, on line l2, l2, Fig. ll, looking in the direction of arrow e, same ligure, and, Fig. I3 is a side view of the driving and stopping mechanism shown in Fig. l2, partially broken away, and looking in the direction of arrow f, Fig. l2.

In the accompanying drawings, l is the main frame, and l a side or end frame, on which is supported the driving mechanism of the printing drum, and other parts embodying my improvements.

2 is the printing drum. The drum 2 has the outer surface or periphery 2 over which the warps to be printed pass, and the wire tie rods 2, preferably adjustable as to their length, connect the periphery 2, or drum proper, with a central hub 2 which is provided with ball bearings, and is mounted on a stationary tube or rod 3, to rotate freely thereon. 'lhe stationary tube or rod 3 forms the sup port and stationary central shaft or axis for the drum 2. The shaft 3 is secured at one end in the upper end of the side frame l, and is supported at its other end in a manner to be hereinafter described.

Upon the inner side of the periphery 2 of the drum 2, preferably near one edge thereof, are secured racks 4, which form a continuous toothed surface around the inner side of the periphery of the drum, which meshes with and is driven by a pinion 5, forming a rim drive for the printing drum. 'lhe pinion 5, see Fig. 4, is in this instance fast on a sleeve 5 loose on the driven shaft 6, and extending within a bearing l. on the frame l. The sleeve 5 carrying the pinion 5 is in this instance clutched to the hub or clutch member 7, splined on the shaft 6, and adapted to be moved into and out of clutch engagement with the sleeve 5 by a hand operated clutch lever 8, see Fig. 3.

In the normal operation of the printing drum, and the mechanism connected with it, the sleeve 5 carrying the pinion 5 will be clutched to the driven shaft 6, to communicate, through the pinion 5, rotary motion to the drum 2 from the driven shaft G. When it is desired to rotate the drum by hand, the sleeve 5 carrying the pinion 5 is unclutched from the shaft G.

In starting the drum 2, see Fig. 3, the shipping lever 9, pivoted on a stud l0 on the frame l, will be moved up to a position where it will be held by the upright shipping lever Il, in the usual way. 'lhe lever ll is connected through a link l2, lever I3 pivoted on a stud I4, and lever l5, with the registering and thread guiding mechanism, in the usual way, see Fig.

The raising of the shipping lever 9 will operate the clutch mechanism for the belt pulley on the driven shaft 6, through connector 16, angle lever 17 pivotally mounted on a stud 18, and lever 19 centrally pivoted on a stud 20, and having its upper end 19 of yoke shape; each arm 19 of the yoke 19 is provided with an open end slot 19 therein, see Fig. 4, to receive a stud 21 on a collar 21 fast on a longitudinally moving rod 22, supported in bearings 23 on brackets 23 secured to the frame. Fast on the rod 22 is the hub 24 of a clutch arm 24, which is made yoke shape at its upper end, and is adapted to extend into and loosely engage an annular recess 25 in the clutch member 25, which'is loosely mounted on an extended hub 26 of the spider 26. The extended hub26 is attached to the driven shaft 6 by a spline 6 or otherwise.

The spider 26 extends within the periphery of the driven belt pulley 27, the hub 27 of which is loose on the driven shaft 6, and is prevented from having longitudinal movement thereon by the pinion 27, and collar 6 on the shaft 6.

The spider 26 has in this instance two inwardly extending projections 26, see Fig. 5, each of which has pivotally mounted thereon a latch or fingerl 28, the outer end of which is of cam shape, and adapted to enter between the two portions of the spider 26. The inner ends of the expanding fingers 28 have threaded holes therethrough to receive the adjusting bolts 29, having nuts `30 thereon. The movement of the clutch member 25, to cause the beveled edge thereof to engage with the bolts 29 and move the expanding fingers 28, will expand the spider 26 within the driven pulley 27, and secure, through frictional engagement, the pulley 27 to the spider 26, and cause the revolution of said spider and of the shaft 6, and through pinion 5, meshing with the racks 4, on the vdrum 2, cause said drum to rotate by a rim drive.

The helically coiled expansion spring 31 on the longitudinally moving rod 22, acts to move said rod 22, and through clutch arm 24, move the clutch 24 out of o perative engagement with the bolts 29, and into inoperative position, as shown in Fig. 4.

On the end of the longitudinally moving rod 22 is securedv by a set screw 32 a collar 33, having a beveled portion 33 and two cam portions 33, see Figs. 6 and 7. The hub of the collar 33 may be adjusted rotatably on the rod 22, to vary the position of the cam portions 33 thereon relatively to thc two rolls 34, which in this instance are pivotally mounted on pins 35 secured inr the yoke shaped portion 36 of an extension 36 on the brake shoes or'levers 36, which are pivotally mounted on studs 37 fast in the stationary frame. The brake shoes or levers 36 extend upon opposite sides of the brake wheel 38 fast on the driven shaft 6. The longitudinal movement of the rod 22, through the action of the lever 19, will cause the collar 33 to move between the'two rolls 34 on the brake shoes 36, and movo apart said roll 34 and the arms 36 and cause the brake shoes or levers 36 to engage with the brake wheel 38, and stop the driven shaft 6, when the belt pulley 27 is disengaged fronx. the spider 26.

l will now describe my improvements in the friction mechanism for the segmental gear of the driving mechanism for the color carriage, to prevent the color carriage from overrunning, which improvements are adapted to be combined with and used in connection with the ordinary driving mechanism of the carriage.

a stand 51, secured to the frame.

lhe color carriage 39, see Fig. 8, is mounted on rolls 40, adapted to travel on a track 41 in the usual way, and has connected thereto a rope or wire 42 which passes over a driven pulley 42 fast on a shaft 44 having a pinion 45 thereon, which meshes with and is driven by a segment gear 46 fast on a rock shaft 47, mounted in suitable bearings 48, see Fig. l0.

A friction wheel 49 is loosely mounted on the rock shaft 47, and a friction band 50 extends around the periphery of said wheel 49, and is attached at each end to The friction wheel 49 has a lug 49 thereon, which is adapted to be engaged by a projection 52 on a collar 52 fast on the rock shaft 47. The friction wheel 49 also has a lug 49 thereon adjustable by means of a slot arid bolt connection, which lug is also adapted to be engaged. by the projection 52 on the collar 52, when the friction wheel 49 is rotated in an opposite direction, see Fig. 8.

The operation of my improved friction mechanism will be readily understood. lt will be seen that the friction only acts at each extreme end of the travel of the color carriage. As the rock shaft 47 is rotated, through the movement of the segmental gear 46, when the color carriage 39 is near the extreme end of its travel, as shown in Fig. 8, the lug 52 on the collar 52 will strike against the lug 49 on the wheel 49, as shown in Fig. 8, and the friction wheel 49 will check the rotation of the shaft 45 and the segment gear 46 fast thereon. When the rock shaft 47 and the segment gear 46 are moved in the opposite direction, as shown in Fig. 9,

ythe projection 52 on the collar 52 will strike against the lug 49 on the friction wheel 49, and through said friction wheel the rotation of said shaft 47 and the seg'- ment gear 46 will be checked.

I will now describe the operating mechanism of the segment gear 46, for the color carriage, which mechanism is particularly shown in Figs. l1, 12 and 13.

A shaft 53 mounted in a bearing 53 see Fig. 12, has a belt pulley 53 fast thereon, see Fig. 1, thro ugh `which said shaft 53 is driven. The shaft 53 also has a pinion 54 loose thereon, which is clutched to the shaft 53 to turn therewith, through a clutch member 55, splined on the shaft 53, and having an annular groove therein to receive pins on a forked shaped lever 56, the hub of which, 56, see Fig. 11, is mounted on a pin 57 supported in suitable bearings. Extending down from the hub 56 is an ear or lug 58 carrying a stud 59 on which is pivoted a lever60, having one end provided with an elongated slot 60 into which extends a pin 61 on a "lever 61, fast onone end of a rock shaft 62 mounted in bearings 62 see Fig. l2. Fast on the other end of said rock shaft 62 is an arm 63, which is connected through a link 64 with a projection 65 on a hand lever 65, which is fast on one end of a rock shaft 66 mounted in suitable bearings. The rockV shaft 66 has fast thereon the pawls or arms 66 and 66, see Fig. 1, which engage the index teeth 2fL and 2b onthe drum, in the usual way.

On the other end of the rock shaft 66, see Fig. 11, is l fast an arm 67 which is connected by a link 68 with a cam lever 69, centrally pivoted on a stu-d 69. One

end of said lever 69 has a spring, not shown, attached thereto, the other end of said lever has a rol] 71 thereon, which is adapted to engage and travel on the periphery of the cam 72, adjustably secured through a slot and bolt connection to the gear 73, fast on a shaft 74, mount- `gear 46, see Figs. 1l and 12. On the opposite side of ed in bearings 74 see Fig. 1. `On the oppositeside of the cam '7 2 is a stop lever 75, centrally pivoted on a stud 76, and having .a roll 76 thereon .to engage with f `the periphery of the :cam 72. A spring 77 attached `to 'the lever 75 and to astationary part of the frame, acts The crankarm 78 is adjustablyconnected tto a rod head i 79 on the upper .end of the rod or connector 80, which is pivotally attached at its lower end to the segment the gear '73 from the cam 72 are secured, in this instance .twocams 81 upon opposite sidesof the gear, 4within the teeth thereon, see Fig. 12.

The lever 60 .above referred to, has pivotally attached to one end a pin 82, which is guided and has a vertical movement within a boss or bearing 83 on the hub 56 of the forked lever 56. Through the lever-60 and connections to the hand lever 65, and the movement of said hand lever 65 to the right in Fig. 11, the upper end of the pin 82, which is adapted to extend in the path of the cams 8l on the gear 73, is moved out of the path of said cams, but when said lever 65 is in its normal position, the position shown in Fig. 11, the inner end of the pin 82 extends vup in the path of the cams 81, see Fig. l2, so that the revolution of the gear 73 and the engagement of the cams 8l thereon with the pin 82, will move said pin and rock the forked shaped lever 56, to cause the clutch 55 to unclutch the pinion 54 and leave said pinion loose on the driven shaft 53.

lhe hand wheel 84, fast on a shaft 85, having a pinion 86 thereon meshing with the teeth 4 on the drum 2, see Fig. 2, is for the purpose of turning the drum by hand, to scrape the surface of the drum after printing, etc. While using the hand wheel 84, the clutch member 7, see Fig. .4, above described, is moved through the lever 8, to unclutch the sleeve 5 carrying the pinion 5.

In connection with the main frame l and the end frame l, see Fig. 1, for supporting the stationary shaft 3 on which the drum 2 is mounted, I preferably provide in the case of large and wide drums, a movable support on the opposite side of the drum from the frame l for supporting the extended shaft 3. This support is 'shown in Fig. 2, and preferably consists of two inclined rods or pipes 87, which are pivotally attached, in this instance at their lower ends on the upright portions of the main frame l, and extend at their upper ends into recesses in a block 88, which is re. cessed to receive a block 89 forming a movable bearing for the shaft 3. A cap 90 extends over the block 88 and is removably secured thereto by bolts 91. Below the bearing block 89 is' arranged a rotary stud 92, which has an extension or cam surface 92 thereon, and an operating handle 93. A' spiral expansion spring 94 encircling a bolt 95, extends into a threaded opening in the cap 90 and into a hole in the upper end of the bearingblock 89, and acts to press down the bearing.

The position of the parts shown in Fig. 2 are the normal position of the parts.

When it is desired to obtain access to the drum for any purpose, the handle 93 is moved, as indicated by broken lines in` Fig. 2, to rotate the cam stud 92, and

allow the bearing block 89 to drop down within the block 88, to release the pressure of said block on the supporting rods 87, and the upper ends of the supporting rods 87 Aare sprung out of the recesses in the block `88, and dropped down onto the floor as shown by broken lines, leaving a 'free space for access to the drum, the shaft 3 and the block 89 being supported from the frame 1 on the oppositeiend.

lFrom the above description in connection with the drawing, the operation of my improvements in printing drum, and particularly `the rotation of the `printing drum, will be readily understood by vthose skilled in the art. When it is desired to rotate the printing drum, loosely mounted on a'stationary tube or rod 3, forming its central shaft or axis, the shipping lever 9 is moved up to where it will be held by the upright shipper lever 11, inthe usual way. The raising of the shipper lever 9 will operate the clutch mechanism for the driven belt pulley 27 on the shalt 6, to drive said shaft, and the pinion -engaging -the inner toothed rim 4 on the drum 2 is secured to the driven shaft 6 through the hand-operated clutch lever 8, and clutch member 7 engaging the sleeve 5 carrying the pinion 5, causing the rotation of said pinion 5, with the shaft 6, and the rotation of the drum 2 driven by said pinion.

In case it is desired to rotate the printing drum 2 independently, the clutch member 7 is moved, through the lever 8, to unclutch the sleeve 5 carrying the pinion 5, from the shaft 6, and the hand wheel 84, fast on the shaft 85, having a pinion 86 thereon meshing with the teeth 4 on the drum 2, is rotated, to rotate the drum 2. I

It will be understood that the details of construction of my improvements may be varied if desired.

The movable supports above described for one end of the central shaft oi the drum, are only necessary to be used on drums having a wide face. In case of ordinary drums these supports for one end of the shaft may be dispensed with.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:-

1. A printing drum for tapestry carpet warps, etc., mountedvto rotate on a central stationary shaft or axis, which is rigidly supported at one end on a stationary frame, and is supported at its other end by movable supports.

2. A printing drum for tapestry carpet warps, etc., mounted to rotate on a central stationary shaft or axis, which is rigidly supported at one end on a stationary frame, and is supported at its other end by movable supports comprising pivoted 'inclined rods, which may be moved out of operative position` 3. A printing drum for tapestry carpet warps, etc., mounted to rotate on a central stationary shaft or axis, which is rigidly supported at one end on a stationary frame, and has on its other end a vertically moving block mounted in a second block which is supported by movable supports, and said second block and movable supports, and means for raising and lowering the first mentioned block.

4. A printing drum for tapestry carpet warps, etc., comprising a periphery or rim, having teeth upon its inner surface through which said drum is automatically rotated by a driven pinion, and having :L hub loosely mounted on a central stationary shaft or anis, 'and rods connecting the rim with the hub and supporting the rim, and said rods adjustable as to their length,

5. lhe combination with a printing drum for tapestry carpet warps, etc., having teeth thereon, and centrally supported, of a shaft, a pulley loose on said shaft, and clutch mechanism for clutching said pulley to said shaft,

vand brake mechanism for said shaft operated simultaneously with said clutch mechanism, and a pinion loose on said shaft and meshing with the teeth on the drum, and clutch mechanism for clutching said pinion to said shaft, to cause the rotation of the printing drum through the ro tation of said shaft, and to unclutch said pinion from said shaft, to allo-iv of the rotation of the printing drum independently of said shaft.

6. In a printing drum for tapestry carpet wal-ps, etc., having a color carriage, the combination with the color carriage, and means for communicating a reciprocating movement thereto, of friction mechanism to act at each extreme end of travel of the color carriage, said friction mechanism comprising a friction band extendingaround a friction Wheel, and said friction wheel loosely mounted on a rock shaft forming a part of the driving mechanism of the color carriage, and.havinga lug thereon, which is adapted to be engaged by a projection on a collar fast on said shaft, and also a second lug thereon which is adapted to be engaged by said projection.

7. In a printing drum for tapestry carpet Warps, etc., having a color carriage, the combination with the color carriage, and means for operating the same, comprisingT a pinion, a segment gear, a connector to a crank, and said crank, and a gear having cam projections thereon, of a pinion` meshing with said gear, and loose on a driven shaft, and said shaft, and a clutch foil clutching said pinion to said driven shaft, a pin c onnected with said clutch, and extending in the path of the cams on said gear, and operated by said cams on the rotation of said gear, to unclutch said pinion on said driven shaft at the end of each movement of the color carriage.

S. In a printing drum for tapestry carpet Warps,l etc., having a color carriage, the combination With the color carriage, and means for operating the same, comprising a pinion, a segment gear, a connector to a crank, and said crank, and a gear having cam projections thereon, of a. pinion meshing with said gear, and loose on a driven shaft, and said shaft, and a clutch for clutching said pinion to said driven shaft, a pin connected with said clutch and extending in the path of the cams on said gear, and operated by said cams on the rotation of said gear, to unclutch said pinion on said driven shaft at the Witnesses z Ron'r. G. Fosmnn, WILLIAM B. PHELPS. 

